public class FourParams {
    double deltaX = 0;
    double deltaY = 0;
    double t = 0.0;
    double k = 1.0;

    FourParams(double deltaX, double deltaY, double t, double k) {
        this.deltaX = deltaX;
        this.deltaY = deltaY;
        this.t = t;
        this.k = k;
    }
}
